CN110060162A - Data grant, querying method and device based on block chain - Google Patents
Data grant, querying method and device based on block chain Download PDFInfo
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- G06F16/20—Information retrieval; Database structures therefor; File system structures therefor of structured data, e.g. relational data
- G06F16/24—Querying
- G06F16/245—Query processing
- G06F16/2458—Special types of queries, e.g. statistical queries, fuzzy queries or distributed queries
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Abstract
One or more embodiments of this specification provide a kind of data grant querying method and device based on block chain, applied to the block chain network including data management node and data query node, which comprises the data management node receives the target data inquiry request that the data query node is sent；The target data is obtained based on the target data inquiry request；Inquiry authorization is sent to the distributed data base of the block chain and deposits card transaction, and the identity that card transaction includes the target data and the data query node is deposited in the inquiry authorization, and at least described target data is by the first encryption keys；The data query node obtains the intelligent contract that card transaction or the inquiry authorization transaction creation are deposited in the inquiry authorization out of the block chain distributed data base；Based on the first decryption key decryption corresponding with first encryption key and obtain the target data.
Description
Technical field
This specification is related to technical field of data processing more particularly to a kind of data grant based on block chain, issuer
Method and device.
Background technique
Block chain technology is also referred to as distributed account book technology, is that one kind is participated in " remembering jointly by several calculating equipment
Account ", the emerging technology of common a complete distributed data base of maintenance.Since block chain technology has decentralization, openly
Transparent, every calculating equipment can participate in data-base recording and respectively calculate that data synchronization can be rapidly performed by between equipment
Characteristic so that block chain technology is widely applied in numerous fields.
Summary of the invention
In view of this, this specification one or more embodiment provides data grant, querying method, device, computer are set
Standby and computer readable storage medium.
To achieve the above object, it is as follows to provide technical solution for this specification one or more embodiment:
According to this specification one or more embodiment in a first aspect, proposing a kind of data grant based on block chain
Querying method, applied to the block chain network including data management node and data query node, which comprises
The data management node receives the target data inquiry request that the data query node is sent；
The data management node is based on the target data inquiry request and obtains the target data；
The data management node sends inquiry authorization to the distributed data base of the block chain and deposits card transaction, described to look into
It askes authorization and deposits the identity that card transaction includes the target data and the data query node, and at least described target data
By the first encryption keys；
The data query node obtains the inquiry authorization out of the block chain distributed data base and deposits card transaction
Or the intelligent contract of the inquiry authorization transaction creation；
The data query node is based on the first decryption key decryption corresponding with first encryption key and obtains institute
State target data.
According to the second aspect of this specification one or more embodiment, a kind of data grant based on block chain is proposed
Method, applied to the block chain network including data management node and data query node, which comprises
The data management node receives the target data inquiry request that the data query node is sent；
The target data is obtained based on the target data inquiry request；
Inquiry authorization is sent to the distributed data base of the block chain and deposits card transaction, and card transaction packet is deposited in the inquiry authorization
The identity of the target data and the data query node is included, and at least described target data is added by the first encryption key
It is close.
According to the third aspect of this specification one or more embodiment, a kind of data query based on block chain is proposed
Method, applied to the block chain network including data management node and data query node, which comprises
The data query node obtains inquiry authorization out of the block chain distributed data base and deposits card transaction or institute
State the intelligent contract of inquiry authorization transaction creation；It includes target data and the data query section that card transaction is deposited in the inquiry authorization
The identity of point, and at least described target data is by the first encryption keys；
Based on the first decryption key decryption corresponding with first encryption key and obtain the target data.
According to the fourth aspect of this specification one or more embodiment, a kind of data grant based on block chain is proposed
Device, applied to the block chain network including data management node and data query node, described device is applied to the data
Management node, comprising:
Receiving unit, the target data inquiry request sent for receiving the data query node；
Acquiring unit, for obtaining the target data based on the target data inquiry request；
Transmission unit deposits card transaction, the inquiry for sending inquiry authorization to the distributed data base of the block chain
The identity that card transaction includes the target data and the data query node, and at least described target data quilt are deposited in authorization
First encryption keys.
According to the 5th of this specification one or more embodiment the aspect, a kind of data query based on block chain is proposed
Device, applied to the block chain network including data management node and data query node, described device is applied to the data
Query node, comprising:
Acquiring unit is deposited card transaction or described is looked into for obtaining inquiry authorization out of the block chain distributed data base
Ask the intelligent contract of authorization transaction creation；It includes target data and the data query node that card transaction is deposited in the inquiry authorization
Identity, and at least described target data is by the first encryption keys；
Decryption unit, for being based on the first decryption key decryption corresponding with first encryption key and obtaining the mesh
Mark data.
According to the 6th of this specification one or more embodiment the aspect, a kind of computer equipment is proposed, comprising: storage
Device and processor；The computer program that can be run by the processor is stored on the memory；The processor runs institute
When stating computer program, data grant method performed by above-mentioned data management node is executed.
According to the 7th of this specification one or more embodiment the aspect, a kind of computer equipment is proposed, comprising: storage
Device and processor；The computer program that can be run by the processor is stored on the memory；The processor runs institute
When stating computer program, data query method performed by above-mentioned data query node is executed.
According to the eighth aspect of this specification one or more embodiment, a kind of computer readable storage medium is proposed,
It is stored thereon with computer program, when the computer program is run by processor, is executed performed by above-mentioned data management node
Data grant method.
According to the 9th of this specification one or more embodiment the aspect, a kind of computer readable storage medium is proposed,
It is stored thereon with computer program, when the computer program is run by processor, is executed performed by above-mentioned data query node
Data query method.
By above technical scheme as it can be seen that this specification provide the data grant based on block chain, querying method and device,
Computer equipment and computer readable storage medium, the target data that data management node can inquire authorization data query node
Encryption is sent to the distributed data base of block chain, and above-mentioned data query node is retained in the distributed data base of block chain
The event for inquiring above-mentioned target data deposits card, both ensure that data query querying node obtains the privacy of above-mentioned target data,
So that the event of the above-mentioned data query querying node target data of multiple nodes of block chain is made common recognition again and deposits card.
Detailed description of the invention
Fig. 1 is the stream of data grant provided by this specification shown in an embodiment based on block chain, querying method
Journey schematic diagram；
Fig. 2 is the data grant device applied to data management node that an embodiment provided by this specification provides
Schematic diagram；
Fig. 3 is the data query device applied to data query node that an embodiment provided by this specification provides
Schematic diagram；
Fig. 4 is data grant device or a kind of hardware of data query device embodiment provided by operation this specification
Structure chart.
Specific embodiment
Example embodiments are described in detail here, and the example is illustrated in the accompanying drawings.Following description is related to
When attached drawing, unless otherwise indicated, the same numbers in different drawings indicate the same or similar elements.Following exemplary embodiment
Described in embodiment do not represent all embodiments consistent with this specification one or more embodiment.Phase
Instead, they are only some aspects phases with the one or more embodiments of as detailed in the attached claim, this specification
The example of consistent device and method.
It should be understood that the sequence that might not show and describe according to this specification in other embodiments executes
The step of correlation method.In some other embodiments, step included by method can than described in this specification more
It is more or less.In addition, single step described in this specification, may be broken down into other embodiments multiple steps into
Row description；And multiple steps described in this specification, it may also be merged into single step progress in other embodiments
Description.
The authorization query scheme to data that tradition is executed by centralization platform, by centralization platform record logarithm it is investigated that
The authorization message of the data of inquiry side's request inquiry, and complete the log feedback of data grant or inquiry；Due to centralization platform pair
Modification, loss of data etc. will cause that information is untrue or imperfect, other mechanisms can not solve.
To solve posed problems above, one or more embodiments of this specification provide a kind of based on block chain
Data grant querying method, applied to the block chain network including data management node and data query node.
Block chain network described in this specification one or more embodiment specifically can refer to each node and pass through common recognition machine
P2P network system reach, with Distributed Storage structure is made, the data distribution in the block chain is connected in time
" block (block) " one by one within, latter block includes the data summarization of previous block, and according to specific common recognition mechanism
The difference of (such as POW, POS, DPOS or PBFT) reaches the data full backup of all or part of node.Those skilled in the art
Member is known, since block chain network system is run under corresponding common recognition mechanism, has included to the data in block chain database very
Difficulty is distorted by arbitrary node, and for example, by using the block chain of Pow common recognition, the attack at least needing the whole network 51% to calculate power is possible to
Distort data with existing, thus block catenary system have other centralization Database Systems it is incomparable guarantee data security,
The characteristic that attack protection is distorted.It follows that the data being included into the distributed data base of block chain will not be attacked or be usurped
Change, to ensure that the real reliability for depositing the data information for demonstrate,proving the distributed data base into block chain.
The exemplary types of block chain network may include publicly-owned block chain network, privately owned block chain network and alliance's block chain
Network.Publicly-owned block chain network is open to using P2P network and participating in all entities of common recognition process.Privately owned block link network
Network is supplied to special entity, which reads and writees permission.Alliance's block chain network is supplied to selection
The group of entities group of entities of the selection (control common recognition process) and including MAC layer.The embodiment of this specification can be in office
What realized in the block chain network of suitable type.
Node (or node device) described in this specification one or more embodiment refers to can be by following respective nodes
The block chain is added in agreement, the installation for running node protocol program, node as the block chain.Those skilled in the art
The node device of the data full backup with block chain distributed data base is usually known as full node, there will be the distribution of block chain
The node device of the incremental backup data (data for such as only having block head) of formula database is known as light node.In this specification
In one or more embodiments, the node type of above-mentioned data management node or data query node is not limited.
As shown in Figure 1, the data grant querying method based on block chain provided by the present embodiment includes:
Step 102, the data management node receives the target data inquiry request that the data query node is sent.
The entity of data management node side described in this specification one or more embodiment (may be simply referred to as data management
Side), usually there is to target data the entity of the administration authorities such as inquiry, authorization query；Above-mentioned target data can store
In the local data base of data management node, it can also be stored in by data management node in the distributed data base of block chain, base
Guarantee the real reliability of data in the tamper-proof mechanisms of block chain；Simultaneously in order to further ensure the storing data on block chain
Crypticity, above-mentioned target data can also be uploaded to block chain by data management node encrytion.
Each allied member's node of each node of block chain network, especially alliance's chain network, can be based on above-mentioned
The data management function of the distributed data base of block chain manages the data of own node on block chain, is guaranteeing data peace
Under the premise of full privacy, prevent data from being generated omission by attack or distorting.
The entity of data query node side described in this specification one or more embodiment (may be simply referred to as data query
Side), i.e., there is the entity of query demand to target data.Those skilled in the art is apparent from, for same node, both
It can be used as data management node, manage its data with administration authorities such as inquiry, authorization queries；It can also be used as data to look into
Node is ask, requests to inquire other target datas to other data management nodes.
It in the present embodiment, is the storage resource of the distributed data base of saving block chain, data query node can base
Target data inquiry request is sent to data management node in the information channel outside block chain, sends the specific side of the inquiry request
Formula is not limited to synchronization notice or asynchronous notifications, etc..
Above-mentioned target data inquiry request may include the target datas such as the type of target data to be checked, data field
Property content, to facilitate the query and search of data management node；It may also include the identity of above-mentioned data query node, or
The digital signature of above-mentioned data query node is to prevent other malicious parties from pretending to be legal data query node；In addition it can wrap
The information such as the url of asynchronous notifications are included, are communicated outside data query node and data management node chain with facilitating.
For example, data grant, querying method described in the present embodiment are applied to rent a house when business scenario, credit of renting a house product
Dividing can be used as the important inspection target rented a house to user, much be rented a house intermediary when auditing lessee's qualification information
It is considered.Similar to the debt-credit credit score of user, credit score of renting a house is due to being related to personal security's privacy of user, usually
It is that management is implemented by the management organization (such as government organs) with high credit.Therefore, in the application scenarios, management user rents a house
The government organs of credit score can be used as data management side, and each house lease intermediary can be used as data query side, certain mesh
The credit score of renting a house of mark user A can be used as target data；For the business demand of house lease intermediary itself, data are looked into
It askes node and sends credit score inquiry request of renting a house to certain target user A such as following instance to data management node:
"<user A><identification card number 12345678><request inquiry: the digital signature of credit score of renting a house><intermediary B
>”
Step 104, above-mentioned data management node is based on the target data inquiry request and obtains the target data.
As described above, manager's node as above-mentioned target data, in one embodiment, above-mentioned target data quilt
It is stored in the local data base of above-mentioned data management node, above-mentioned data management node can be based on above-mentioned target data inquiry request
Retrieval obtains the target data in local data base；For example, in the example that above-mentioned application scenarios of renting a house are enumerated, data
Management node (such as terminal of government organs C) can be based on the attribute of target data --- the identification card number of user A or user A,
It is retrieved in database to obtain the credit score of renting a house of user A: 350 points.
In another embodiment, above-mentioned target data is stored in the distributed data base of above-mentioned block chain, due to
Data are encrypted storage usually on block chain, and the detailed process that above-mentioned data management node obtains the target data can wrap
It includes:
The data management node is obtained based on the target data inquiry request from the distributed data base of the block chain
It takes by the second data of the second encryption keys, second data include the target data；
The data management node is based on second described in the second decryption key decryption corresponding with second encryption key
Data are to obtain the target data.
Requesting target data to be checked due to data query node may be the part field in a data, above-mentioned
Target data can be contained in the second data by the second encryption keys obtained from the distributed data base of block chain
It is interior.For example, "<credit score of renting a house: 350 points>" of user A may be deposited in the above-mentioned application scenarios example for renting a house
Storage is at full section data "<user A><ID card No.: 12345678><registered permanent residence address: Xihu District of Hangzhou City West Lake road 1><rent
In room credit score: 350 points > ".
It is worth noting that, this specification does not limit the distributed data base that above-mentioned second data are sent to block chain
Sender's node identity, either above-mentioned data management node, is also possible to other with target data or above-mentioned
Node where the entity of two data administration authorities.
In the another embodiment shown, above-mentioned second data of above-mentioned data management node decryption, above-mentioned for convenience
Second encryption key is the public key of the data management node；Correspondingly, above-mentioned second decruption key is the data management section
The private key of point.Certainly, other a variety of cipher modes also can be used in above-mentioned second data, and details are not described herein.
Step 110, the data management node sends inquiry authorization to the distributed data base of the block chain and deposits card friendship
Easily, the inquiry authorization is deposited card transaction and is used for authorize the behavior of target data described in the data query querying node to deposit card,
The identity that card transaction includes the target data and the data query node, and at least described mesh are deposited in the inquiry authorization
Data are marked by the first encryption keys.
Transaction (transaction) described in embodiments one or more in the present specification, refers to and passes through block
The node of chain creates, and a data for needing finally to be distributed in the distributed data base of block chain.Wherein, in block chain
Transaction, there are points of the transaction of narrow sense and the transaction of broad sense.The transaction of narrow sense refers to the valence that user issues to block chain
Value transfer；For example, transaction can be one that user initiates in block chain and turn in traditional bit coin block chain network
Account.And the transaction of broad sense refers to the business datum being intended to business that user subject is issued by node to block chain,
Card transaction is deposited in inquiry authorization as described in the embodiment comprising by the target data of the first encryption keys and the data
The identity of query node, so that card is deposited in the behavior for target data described in above-mentioned data query querying node.
For example, in above-mentioned application scenarios of renting a house, for manage resident rent a house government organs' C node of credit score will
The inquiry that the identity of the credit score of renting a house, intermediary B of above-mentioned user A and other finish messages are as follows is awarded
Power deposits card transaction:
"<intermediary B><on March 8th, 2019 request inquiry: the credit score of renting a house of user A><credit score of renting a house:
350 points (encrypted)><digital signature of government organs C>"
Above-mentioned inquiry authorization is deposited into card transaction publication in the distributed data base of block chain, both can be data management section
Point deposits card to the act of authorization of the above-mentioned target data of data query querying node, and can be on above-mentioned data query querying node
Card is deposited in the behavior for stating target data.
In the present embodiment, encrypted target data is decrypted for convenience of data query node, above-mentioned data management
Node can encrypt above-mentioned target data according to the encryption rule made an appointment with data query node.In a kind of embodiment party shown
In formula, first encryption key is the public key of the data query node；First decruption key is the data query
The private key of node.
In order to which the content format of card transaction is deposited in the above-mentioned inquiry authorization of specification, the node of block chain is facilitated to collect above-mentioned inquiry
Common recognition, the verifying for depositing card transaction, in the another embodiment shown, above-mentioned inquiry authorization deposits card transaction as creating intelligence
The transaction of contract.
It can develop, test and portion in block chain network to further provide for the background of the embodiment of this specification
Application program is affixed one's name to execute in block chain network.Sample application program can include but is not limited to intelligent contract.Intelligent contract
The digital representation for influencing the law contract of the real world of agreement terms of each side can be described as having.Intelligent contract is by reality
It applies, store, updating (as needed) and being executed in block chain network.Contract side associated with intelligent contract is (for example, buy
Side and the seller) it is represented as the node in block chain network.
In some instances, intelligent contract can store data, which can be used for recording the information, fact, association, remaining
Any other information needed for volume and realization contract execute logic.Intelligent contract can be described as the calculating being made of function
Machine executable program calls function to execute intelligent contract wherein the example (instance) of the intelligence contract can be created
Logic.
In technical aspect, intelligent contract can be realized based on the class of object and object-oriented.For example, the item of intelligent contract
Money and component can be expressed as the object by realizing the application program processing of intelligent contract.Intelligent contract (or in intelligent contract
Object) another intelligent contract (or object in same intelligent contract) can be called as the object of other object-orienteds.
For example, the calling that object carries out can be creation, update, deletion, propagation or the calling with the object communication of another class.Object
Between calling can by function, method, application programming interface (application programming interface,
API) or other call-by mechanisms are realized.For example, the first object can call a function to the second object of creation.
In the present embodiment, data management node can be according to preset for inquiring the contract of the content of target data
Creation rule, creation can get the intelligent contract of the content of target data based on the first decruption key to its calling；Together
When, the intelligence contract due to being admitted in the distributed data base of block chain, and play to inquiry target data authorization and
Card effect is deposited in the behaviors such as the inquiry to target data.
Those skilled in the art is known, and the common recognition mechanism setting of alliance's chain is very flexible, can assist between allied member
Quotient is in a manner of obtaining the common recognition content to different transaction or intelligent contract and know together.Reality corresponding to some nodes in alliance's chain
Certain special datas may be had restricted constraint rule by body, such as government organs, and intelligent contract can be used as law due to it
The digitized representations of rule, and each member node of alliance's chain is facilitated to carry out common recognition verifying (for example, conveniently testing to its treaty content
Whether card, which defers to certain nodes, provides the processing of special data), therefore card transaction is deposited into above-mentioned inquiry authorization and is set as intelligence
Contract creation transaction, is a kind of preferred embodiment that card transaction is deposited in above-mentioned inquiry authorization.
Step 112, the data query node obtains the inquiry authorization out of the block chain distributed data base
Deposit the intelligent contract of card transaction or the inquiry authorization transaction creation.
As the node of above-mentioned block chain, above-mentioned data query node can be out of, above-mentioned block chain distributed data base
The intelligent contract that card transaction or the inquiry authorization transaction creation are deposited in above-mentioned inquiry authorization is obtained, to be based on and above-mentioned first encryption
Target data in the corresponding above-mentioned transaction of first decryption key decryption of key simultaneously obtains above-mentioned target data.
In the another embodiment shown, the decryption of above-mentioned target data is obtained for convenience of above-mentioned data query node
It takes, this method further include:
Step 114, the data management node sends the authorization to the target data to the data query node and believes
Breath；The authorization message includes first decruption key.
The embodiment is applicable to data management node and data query node is not arranged to above-mentioned target data
In the scene of cipher mode.Data management node can look into each authorization data query node according to the encryption rule of itself
The target data of inquiry uses different encryption keys, more improves the safety of target data.
In the another embodiment shown, in order to further facilitate data query node to obtain above-mentioned target data
It takes, above-mentioned authorization message may also include the search index that card transaction is deposited in above-mentioned inquiry authorization, so that data query node can be quick
The inquiry authorization comprising above-mentioned target data is got from the distributed data base of block chain deposits card transaction.Above-mentioned search index
May include it is described inquiry authorization Cun Zheng exchange block height or above-mentioned inquiry authorization deposit card transaction transaction id
(TXID), etc..
When transaction of the card transaction to be used to create intelligent contract as described above is deposited in above-mentioned inquiry authorization, for convenience of data
For query node to the calling of above-mentioned intelligent contract, the authorization message of above-mentioned target data may include first decruption key and institute
State the address of intelligent contract.
Step 116, the data query node is based on the first decryption key decryption corresponding with first encryption key
And obtain the target data.
After getting above-mentioned inquiry authorization and depositing the address for demonstrate,proving transaction or above-mentioned intelligent contract, data query node can be based on
First decryption key decryption is to obtain above-mentioned target data.
It is worth noting that, when it is the transaction for creating intelligent contract that card transaction is deposited in above-mentioned inquiry authorization, above-mentioned number
It is investigated that asking node based on the first decryption key decryption corresponding with first encryption key and obtaining the tool of the target data
Body process is based on and first encryption key through above-mentioned data query node in the block chain database being locally stored
Corresponding first decruption key calls the intelligent contract so that the decryption of the target data is patrolled in the intelligence contract execution
Volume, obtain the target data.The above-mentioned calling process to intelligent contract is only stored in data query node without cochain again
Block chain distributed data base (account book) in locally call intelligent contract program to decrypt target data, convenient and efficient safety
(original text that first decruption key or target data are known without other nodes on block chain) obtain target data.
It is worth noting that, the privacy of target data described in said one or multiple embodiments is often as it is
It is related to the privacy of user's individual and has, for example, intermediary B wants to obtain target in above-mentioned application scenarios of renting a house
Whether the credit score of renting a house of the credit score of renting a house of user A, the user A can license to above-mentioned intermediary B, in addition to for occupying
The rent a house government organs C of credit score management of the people gives and authorizes, and also needs user A itself to give and authorizes.
Therefore, in the another embodiment that this specification provides, the block chain network further includes target user client
End.User subject in terminal operating installation program of client by being added in above-mentioned block chain network come above-mentioned client peace
The installation procedure that program can be block chain node device is filled, correspondingly, which is also used as above-mentioned block chain
Node device；Above-mentioned installation program of client is also possible to connect with allied member's node device in alliance's chain, quilt
The block chain user client program of access is controlled, correspondingly, target user's client is not due to having directly access block
The permission of the distributed data base of chain, and it is general not by the node as above-mentioned block chain.This specification does not limit above-mentioned mesh
Mark user client whether be above-mentioned block chain node.
Before the data management node deposits card transaction to the transmission inquiry authorization of the distributed data base of the block chain
(or before the data management node is based on the target data inquiry request acquisition target data), the method
Further include:
Step 106, the data management node sends the user-authorization-request to target data, institute to the target user
State the identity that user-authorization-request includes the data query node；
Step 108, whether target user's client allows to authorize the data to data management node transmission
Query node inquires the reply of the target data.
If so, the data management node executes above-mentioned steps 110, the distributed data base of Xiang Suoshu block chain is sent
Card transaction is deposited in inquiry authorization.
In the above-mentioned application scenarios rented a house, government organs C is asked in the target data inquiry for receiving intermediary B transmission
It asks, the user-authorization-request to target data can be sent to the client of target user A, above-mentioned user-authorization-request can be in the following example
It is shown:
"<intermediary C><request inquiry><user A><credit score of renting a house><agrees to reply 1><disagreeing reply 0>"
Correspondingly, the reply for allowing to authorize that the node of government organs C is sent in the client for receiving target user A, such as
After "<1>", it can execute to send to inquire to authorize to the distributed data base of the block chain described in above-described embodiment and deposit card friendship
Easily.
Corresponding with the realization of above-mentioned process, the embodiment of this specification additionally provides data grant device 20 and data query dress
Set 30.Device 20 or 30 can also be realized by software realization by way of hardware or software and hardware combining.With software
It is CPU (Central Process Uni t, the center by place equipment as the device on logical meaning for realization
Processor) by corresponding computer program instructions be read into memory operation formed.For hardware view, in addition to Fig. 4 institute
Except the CPU, memory and the memory that show, the equipment where data grant device or data query device, which also typically includes, to be used for
Other hardware such as the chip of wireless signal transmitting-receiving are carried out, and/or for realizing other hardware such as board of network communicating function.
As shown in Fig. 2, this specification additionally provides a kind of data grant device 20 based on block chain, it is applied to include number
According to the block chain network of management node and data query node, described device 20 is applied to the data management node, comprising:
Receiving unit 202, the target data inquiry request sent for receiving the data query node；
Acquiring unit 204, for obtaining the target data based on the target data inquiry request；
Transmission unit 206 deposits card transaction for sending inquiry authorization to the distributed data base of the block chain, described to look into
It askes authorization and deposits the identity that card transaction includes the target data and the data query node, and at least described target data
By the first encryption keys.
In the another embodiment shown, the acquiring unit 204 is further used for inquiring based on the target data
Request is obtained from the distributed data base of the block chain by the second data of the second encryption keys, second data packet
Include the target data；
Based on the second data described in the second decryption key decryption corresponding with second encryption key to obtain the mesh
Mark data.
In the another embodiment shown, second encryption key is the public key of the data management node；It is described
Second decruption key is the private key of the data management node.
In the another embodiment shown, first encryption key is the public key of the data query node.
In the another embodiment shown, the transmission unit 206 is also used to:
The authorization message to the target data is sent to the data query node；The authorization message include with it is described
Corresponding first decruption key of first encryption key.
In the another embodiment shown, the authorization message further include: the transaction of card transaction is deposited in the inquiry authorization
The address of the intelligent contract of card transaction creation is deposited in ID or described inquiry authorization.
In the another embodiment shown, the block chain network further includes target user's client；
The transmission unit 206, is further used for:
The user-authorization-request to the target data is sent to the target user, the user-authorization-request includes institute
State the identity of data query node；
The receiving unit, is further used for:
Receive that target user's client sends allows to authorize target data described in the data query querying node
Reply.
In the another embodiment shown, the block chain network be alliance's chain network, the data management node and
The data query node is allied member's node；Target user's client is the user of data management node connection
Client.
As shown in figure 3, this specification additionally provides a kind of data query device 30 based on block chain, it is applied to include number
According to the block chain network of management node and data query node, described device 30 is applied to the data query node, comprising:
Acquiring unit 302 deposits card transaction or institute for obtaining inquiry authorization out of the block chain distributed data base
State the intelligent contract of inquiry authorization transaction creation；It includes target data and the data query section that card transaction is deposited in the inquiry authorization
The identity of point, and at least described target data is by the first encryption keys；
Decryption unit 304, for being based on the first decryption key decryption corresponding with first encryption key and obtaining institute
State target data.
In the another embodiment shown, first encryption key is the public key of the data query node；It is described
First decruption key is the private key of the data query node.
In the another embodiment shown, the device 30 further include:
Receiving unit 306, the authorization message to the target data sent for receiving the data management node；Institute
Stating authorization message includes first decruption key.
In the another embodiment shown, the authorization message further include: the transaction of card transaction is deposited in the inquiry authorization
The address of the intelligent contract of card transaction creation is deposited in ID or described inquiry authorization.
In the another embodiment shown, the inquiry authorization deposits card transaction as the transaction for creating intelligent contract；
The decryption unit 304, is further used for:
Based on the first decruption key corresponding with first encryption key, in the locally calling intelligent contract so that institute
Intelligent contract execution is stated to the decryption logic of the target data, obtains the target data.
The function of each unit and the realization process of effect are specifically detailed in above-mentioned data management section in above-mentioned apparatus 20 or 30
The realization process of step is corresponded in data grant method performed by point or data query node or data query method, correlation
Place illustrates that details are not described herein referring to the part of embodiment of the method.
The apparatus embodiments described above are merely exemplary, wherein described, unit can as illustrated by the separation member
It is physically separated with being or may not be, component shown as a unit may or may not be physics mould
Block, it can it is in one place, or may be distributed on multiple network modules.It can be selected according to the actual needs
In some or all of unit or module realize the purpose of this specification scheme.Those of ordinary skill in the art are not paying
In the case where creative work, it can understand and implement.
Device that above-described embodiment illustrates, unit, module can specifically be realized, Huo Zheyou by computer chip or entity
Product with certain function is realized.A kind of typically to realize that equipment is computer, the concrete form of computer can be a
People's computer, laptop computer, cellular phone, camera phone, smart phone, personal digital assistant, media player, navigation
It is any several in equipment, E-mail receiver/send equipment, game console, tablet computer, wearable device or these equipment
The combination of kind equipment.
Corresponding with above method embodiment, the embodiment of this specification additionally provides a kind of computer equipment, such as Fig. 4 institute
Show, which includes memory and processor.Wherein, the computer that can be run by processor is stored on memory
Program；Processor executes above-mentioned data management node in this specification embodiment and is held in the computer program of operation storage
Each step of capable data grant method.To each step of data grant method performed by above-mentioned data management node
The content before referring to is described in detail, is not repeated.
Corresponding with above method embodiment, the embodiment of this specification additionally provides a kind of computer-readable storage medium
Matter is stored with computer program on the storage medium, and it is real to execute this specification when being run by processor for these computer programs
Apply each step of data grant method performed by data management node in example.To number performed by above-mentioned data management node
Content before referring to according to the detailed description of each step of authorization method, is not repeated.
Corresponding with above method embodiment, the embodiment of this specification additionally provides a kind of computer equipment, such as Fig. 4 institute
Show, which includes memory and processor.Wherein, the computer that can be run by processor is stored on memory
Program；Processor executes above-mentioned data query node in this specification embodiment and is held in the computer program of operation storage
Each step of capable data query method.To each step of data query method performed by above-mentioned data query node
The content before referring to is described in detail, is not repeated.
Corresponding with above method embodiment, the embodiment of this specification additionally provides a kind of computer-readable storage medium
Matter is stored with computer program on the storage medium, and it is real to execute this specification when being run by processor for these computer programs
Apply each step of data query method performed by data query node in example.To number performed by above-mentioned data query node
Content before referring to according to the detailed description of each step of querying method, is not repeated.
The foregoing is merely the preferred embodiments of this specification, all in this explanation not to limit this specification
Within the spirit and principle of book, any modification, equivalent substitution, improvement and etc. done should be included in the model of this specification protection
Within enclosing.
In a typical configuration, calculating equipment includes one or more processors (CPU), input/output interface, net
Network interface and memory.
Memory may include the non-volatile memory in computer-readable medium, random access memory (RAM) and/or
The forms such as Nonvolatile memory, such as read-only memory (ROM) or flash memory (flash RAM).Memory is computer-readable medium
Example.
Computer-readable medium includes permanent and non-permanent, removable and non-removable media can be by any method
Or technology come realize information store.Information can be computer readable instructions, data structure, the module of program or other data.
The example of the storage medium of computer includes, but are not limited to phase change memory (PRAM), static random access memory
(SRAM), dynamic random access memory (DRAM), other kinds of random access memory (RAM), read-only memory
(ROM), electrically erasable programmable read-only memory (EEPROM), flash memory or other memory techniques, CD-ROM are read-only
Memory (CD-ROM), digital versatile disc (DVD) or other optical storage, magnetic cassettes, tape magnetic disk storage or
Other magnetic storage devices or any other non-transmission medium, can be used for storage can be accessed by a computing device information.According to
Herein defines, and computer-readable medium does not include temporary computer readable media (trans itory media), such as modulation
Data-signal and carrier wave.
It should also be noted that, the terms "include", "comprise" or its any other variant are intended to nonexcludability
It include so that the process, method, commodity or the equipment that include a series of elements not only include those elements, but also to wrap
Include other elements that are not explicitly listed, or further include for this process, method, commodity or equipment intrinsic want
Element.In the absence of more restrictions, the element limited by sentence "including a ...", it is not excluded that including described want
There is also other identical elements in the process, method of element, commodity or equipment.
It will be understood by those skilled in the art that the embodiment of this specification can provide as the production of method, system or computer program
Product.Therefore, the embodiment of this specification can be used complete hardware embodiment, complete software embodiment or combine software and hardware side
The form of the embodiment in face.Moreover, it wherein includes that computer is available that the embodiment of this specification, which can be used in one or more,
It is real in the computer-usable storage medium (including but not limited to magnetic disk storage, CD-ROM, optical memory etc.) of program code
The form for the computer program product applied.
Claims (39)
1. a kind of data grant querying method based on block chain, applied to including data management node and data query node
Block chain network, which comprises
The data management node receives the target data inquiry request that the data query node is sent；
The data management node is based on the target data inquiry request and obtains the target data；
The data management node sends inquiry authorization to the distributed data base of the block chain and deposits card transaction, and the inquiry is awarded
Power deposits the identity that card transaction includes the target data and the data query node, and at least described target data is by the
One encryption keys；
The data query node obtains the inquiry authorization out of the block chain distributed data base and deposits card transaction or institute
State the intelligent contract of inquiry authorization transaction creation；
The data query node is based on the first decryption key decryption corresponding with first encryption key and obtains the mesh
Mark data.
2. according to the method described in claim 1, the data management node, which is based on the target data inquiry request, obtains institute
State target data, comprising:
The data management node obtains quilt from the distributed data base of the block chain based on the target data inquiry request
Second data of the second encryption keys, second data include the target data；
The data management node is based on the second data described in the second decryption key decryption corresponding with second encryption key
To obtain the target data.
3. according to the method described in claim 2, second encryption key is the public key of the data management node；Described
Two decruption keys are the private key of the data management node.
4. first encryption key is the data query according to claim 1 to method described in any claim in 3
The public key of node；First decruption key is the private key of the data query node.
5. according to the method described in claim 1, further include:
The data management node sends the authorization message to the target data to the data query node；The authorization letter
Breath includes first decruption key.
6. according to the method described in claim 5, the authorization message further include: the transaction id of card transaction is deposited in the inquiry authorization
Or the address of the intelligent contract of card transaction creation is deposited in the inquiry authorization.
7. according to the method described in claim 1, the inquiry authorization deposits card transaction as the transaction for creating intelligent contract；
The data query node is based on the first decryption key decryption corresponding with first encryption key and obtains the mesh
Mark data, comprising:
The data query node is based on the first decruption key corresponding with first encryption key, is locally calling the intelligence
Energy contract is so that the intelligence contract execution obtains the target data to the decryption logic of the target data.
8. according to the method described in claim 1, the block chain network further includes target user's client；
The method also includes:
The data management node sends the user-authorization-request to the target data to the target user, and the user awards
Power request includes the identity of the data query node；
Target user's client allows to authorize described in the data query querying node to data management node transmission
The reply of target data.
9. according to the method described in claim 8, the block chain network is alliance's chain network, the data management node and institute
Stating data query node is allied member's node；Target user's client is the user visitor of data management node connection
Family end.
10. a kind of data grant method based on block chain, applied to the area including data management node and data query node
Block chain network, which comprises
The data management node receives the target data inquiry request that the data query node is sent；
The target data is obtained based on the target data inquiry request；
Inquiry authorization is sent to the distributed data base of the block chain and deposits card transaction, and it includes institute that card transaction is deposited in the inquiry authorization
The identity of target data and the data query node is stated, and at least described target data is by the first encryption keys.
11. according to the method described in claim 10, described obtain the target data based on the target data inquiry request,
Include:
It is obtained from the distributed data base of the block chain by the second encryption keys based on the target data inquiry request
The second data, second data include the target data；
Based on the second data described in the second decryption key decryption corresponding with second encryption key to obtain the number of targets
According to.
12. according to the method for claim 11, second encryption key is the public key of the data management node；It is described
Second decruption key is the private key of the data management node.
13. method described in any claim in 0 to 12 according to claim 1, first encryption key is the data
The public key of query node.
14. according to the method described in claim 10, further include:
The authorization message to the target data is sent to the data query node；The authorization message includes and described first
Corresponding first decruption key of encryption key.
15. according to the method for claim 14, the authorization message further include: the transaction of card transaction is deposited in the inquiry authorization
The address of the intelligent contract of card transaction creation is deposited in ID or described inquiry authorization.
16. according to the method described in claim 10, the block chain network further includes target user's client；
The method also includes:
The user-authorization-request to the target data is sent to the target user, the user-authorization-request includes the number
According to the identity of query node；
Receive time for allowing to authorize target data described in the data query querying node that target user's client is sent
It is multiple.
17. according to the method for claim 16, the block chain network be alliance's chain network, the data management node and
The data query node is allied member's node；Target user's client is the user of data management node connection
Client.
18. a kind of data query method based on block chain, applied to the area including data management node and data query node
Block chain network, which comprises
The data query node obtains inquiry authorization out of the block chain distributed data base and deposits card transaction or described look into
Ask the intelligent contract of authorization transaction creation；It includes target data and the data query node that card transaction is deposited in the inquiry authorization
Identity, and at least described target data is by the first encryption keys；
Based on the first decryption key decryption corresponding with first encryption key and obtain the target data.
19. according to the method for claim 18, first encryption key is the public key of the data query node；It is described
First decruption key is the private key of the data query node.
20. according to the method for claim 18, further includes:
The data query node receives the authorization message to the target data that the data management node is sent；It is described to award
Weighing information includes first decruption key.
21. according to the method for claim 20, the authorization message further include: the transaction of card transaction is deposited in the inquiry authorization
The address of the intelligent contract of card transaction creation is deposited in ID or described inquiry authorization.
22. according to the method for claim 18, the inquiry authorization deposits card transaction as the transaction for creating intelligent contract；
It is described to be based on the first decryption key decryption corresponding with first encryption key and obtain the target data, comprising:
Based on the first decruption key corresponding with first encryption key, in the locally calling intelligent contract so that the intelligence
Energy contract executes the decryption logic to the target data, obtains the target data.
23. a kind of data grant device based on block chain, applied to the area including data management node and data query node
Block chain network, described device are applied to the data management node, comprising:
Receiving unit, the target data inquiry request sent for receiving the data query node；
Acquiring unit, for obtaining the target data based on the target data inquiry request；
Transmission unit deposits card transaction, the inquiry authorization for sending inquiry authorization to the distributed data base of the block chain
The identity that card transaction includes the target data and the data query node is deposited, and at least described target data is by first
Encryption keys.
24. device according to claim 23, the acquiring unit are further used for asking based on target data inquiry
It asks and obtains from the distributed data base of the block chain by the second data of the second encryption keys, second data include
The target data；
Based on the second data described in the second decryption key decryption corresponding with second encryption key to obtain the number of targets
According to.
25. device according to claim 24, second encryption key is the public key of the data management node；It is described
Second decruption key is the private key of the data management node.
26. the device according to any claim in claim 23 to 25, first encryption key is the data
The public key of query node.
27. device according to claim 23, the transmission unit is also used to:
The authorization message to the target data is sent to the data query node；The authorization message includes and described first
Corresponding first decruption key of encryption key.
28. device according to claim 27, the authorization message further include: the transaction of card transaction is deposited in the inquiry authorization
The address of the intelligent contract of card transaction creation is deposited in ID or described inquiry authorization.
29. device according to claim 23, the block chain network further includes target user's client；
The transmission unit, is further used for:
The user-authorization-request to the target data is sent to the target user, the user-authorization-request includes the number
According to the identity of query node；
The receiving unit, is further used for:
Receive time for allowing to authorize target data described in the data query querying node that target user's client is sent
It is multiple.
30. device according to claim 29, the block chain network is alliance's chain network, the data management node and
The data query node is allied member's node；Target user's client is the user of data management node connection
Client.
31. a kind of data query device based on block chain, applied to the area including data management node and data query node
Block chain network, described device are applied to the data query node, comprising:
Acquiring unit, for obtaining out of the block chain distributed data base, card transaction is deposited in inquiry authorization or the inquiry is awarded
Weigh the intelligent contract of transaction creation；The identity that card transaction includes target data and the data query node is deposited in the inquiry authorization
Mark, and at least described target data is by the first encryption keys；
Decryption unit, for being based on the first decryption key decryption corresponding with first encryption key and obtaining the number of targets
According to.
32. device according to claim 31, first encryption key is the public key of the data query node；It is described
First decruption key is the private key of the data query node.
33. device according to claim 31, further includes:
Receiving unit, the authorization message to the target data sent for receiving the data management node；The authorization
Information includes first decruption key.
34. device according to claim 33, the authorization message further include: the transaction of card transaction is deposited in the inquiry authorization
The address of the intelligent contract of card transaction creation is deposited in ID or described inquiry authorization.
35. device according to claim 31, the inquiry authorization deposits card transaction as the transaction for creating intelligent contract；
The decryption unit, is further used for:
Based on the first decruption key corresponding with first encryption key, in the locally calling intelligent contract so that the intelligence
Energy contract executes the decryption logic to the target data, obtains the target data.
36. a kind of computer equipment, comprising: memory and processor；Being stored on the memory can be transported by the processor
Capable computer program；When the processor runs the computer program, execute such as claim 10 to 17 any one institute
The method stated.
37. a kind of computer equipment, comprising: memory and processor；Being stored on the memory can be transported by the processor
Capable computer program；When the processor runs the computer program, execute such as claim 18 to 22 any one institute
The method stated.
38. a kind of computer readable storage medium, is stored thereon with computer program, the computer program is run by processor
When, execute the method as described in claim 10 to 17 any one.
39. a kind of computer readable storage medium, is stored thereon with computer program, the computer program is run by processor
When, execute the method as described in claim 18 to 22 any one.
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| CN201910248863.3A CN110060162B (en) | 2019-03-29 | 2019-03-29 | Data authorization and query method and device based on block chain |
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